Interlocking brick.



3'. S088. INTEELOGKING BRICK.

APPLIOATION FILED MAY 15, 1906.

Patented Nov. 17, 1908.

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W1 NE 7 v lNVliNTO/G BY J ENTERLOGKING BRICK.

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I INITED STATES PATENT oFFioE.

. JOSEPH SOSS, NEW YORK, N. Y.

Specification of Letters Patent.

Patented Nov. 17, 1908 To all whom it may concern:

Be it known that I, J OBEPH Soss, a citizen of the United States, andresiding at New York, in the county of New York and State of New York,have invented certain new and useful Improvements in- InterlockingBricks, of which the following is a specification, such as will enablethose skilled in the art to which it appertains to make and use thesame. I

y This invention relates to building bricks and is more particularly animprovement on so called interlocking bricks, and the object of myimprovement is to provide a brick having means of interlocking itselfwith other bricks of like construction when placed in a wall insuccessive courses; another object being to provide an interlockingbrick which is of such form and construction that in its manufacture itwill present no obstacle to an even and thorough calcining in the brickkiln, and will not warp or bend through unequal expansion; anotherobject being to obtain a brick which does not present pointedprojections which latter in transportation will suffer by breakage andwhich would thereby impair its value as an interlocking brick, and Iattain these and other objects by means of spherical projections anddepressions placed on the two opposite parallel bedding planes ofthe-brick.

The invention is fully disclosed in the following specification, ofwhich the accompanying drawing forms a part, in which the separate partsof my improvement are designated by suitable reference characters ineach of the views, and in which Figure 1 is an isometric perspectiveview of my improved brick. Fig. 2 is a side view of the same. Fig. 3 asection on the line 3-3 of Fig. 1; Fig. 4 a section on the line 4-4 ofFig. 1; Fig. 5 a section on the line 5+5 of Fig. 1; Fig. 6 is a diarammatic view illustrating the centers of t e various circularconvolutions required in the construction of my brick; and, Fig. 7illustrates part of a wall built up by means of my interlocking bricksand showing a footing course, one stretcher course and one. headercourse.

As seen in the drawings the brick a is of the same relative dimensionsin length, width and thickness corresponding to ordinary buildin bricks.The top 0 and bottom b or the bedding sides of the bricks are composedof curved surfaces forming pro-, jections -e and depressions d inalternation.

The depressions of one side are 0 posite the projections of the other sothat't e brick is at all points of uniform thickness, hence theprojections are of substantiallythe same dimensions as the depressionsand merge the one into the other without any intervening surface and onebrick will fit closely to another when placed thereon.

As in the ordinary bricks in common use my improved brick is of greaterlength than width and the projections and depressions extend in rowslongitudinally of the brick and at right angles thereto, so that when aheader course is laid the header bricks will be at substantially rightangles to the bricks of a stretcher course and will fit as closelythereon as though the meeting surfaces were the flat surfaces ofordinary bricks. The side and end edges of each brick are strai ht planesurfaces as in ordinary bricks, so t at a wall composed of my improvedbricks will presentno eater unevenness than one made of bricks o theusual form.

In Fig. 7 at g is shown a footing course where a brick is employedhaving one flush face It and one interlocking face i; at k is shown astretcher course em loying my imroved brick interlocking itself with theooting course 9 and the superimposed header course Z. As usual inbuilding construction all bricks break joints and my improved brick isespecially useful in interlocking all bricks when used solely for anumber of superimposed header courses in which case all bricks always'must break joints with each other. In practice I prefer to make thedepressions slightly largerthan the exact theoretical complement of theconical projections, the object being to provide space for a slightadditional amount of mortar at this place and also to allow thebricklayer to diverge somewhat from an exact straight alinement in thecase of building up walls on a curvature with a large radius.

It will be apparent that by means of this brick a perfect bondage can beobtained in each course and between each successive course, that thisbrick obviates all defects usually occasioned in interlocking bricks bynot becoming subject to breakage of any of the essential parts of theinterlocking device and that it is thus easy of construction andmagipulation and useful in the building tra Having fully described myinvention,

what I claim as new and desire to secure by Letters Patent, is

1. The herein described building brick having the bedding surfacesentirely composed of curved projections and depressions, merginginto-each other, said elevations and depressions bein arranged in rowslongitudinally of the brick and at right angles thereto, as and forthepurposes specified.

2.. The herein described building brick, having the bedding surfacesentirely composed of alterante curved projections and depressionsmerging into each other, said depressions and projections being arrangedin rows longitudinally of the brick and at right 15 In testimony that Iclaim the foregoing as 20 my invention I have signed my name in presenceof the subscriblng Witnesses this 14th day of May 1906.

JOSEPH SOSS.

Witnesses:

F. A. STEWART, O. J KLEIN.

